12 January 2007
Vol 315, Issue 5809

About The Cover

Cover image expansion

COVER Scanning electron micrograph of Trichomonas vaginalis parasites (gray-green) adhering to vaginal epithelial cells (pink). Attached parasites are flattened and amoeba-like; parasites that do not adhere are pear-shaped. See page 207. Image: Antonio Pereira-Neves and Marlene Benchimol, Santa Ursula University, Rio de Janeiro